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Nadolol

Drug Information

Nadolol is used to treat both angina pectoris (chest pain) and high blood pressure, and it is in a class of drugs known as beta-adrenergic blockers. Since nadolol is related to propranolol, it may have similar interactions with dietary supplements and herbs.

Common brand names:

Corgard

Summary of Interactions with Vitamins, Herbs, & Foods

Types of interactions: Beneficial Adverse Check

Replenish Depleted Nutrients

  • none

Reduce Side Effects

  • none

Support Medicine

  • none

Reduces Effectiveness

  • Green Tea
    In a study of healthy volunteers, ingestion of green tea along with nadolol decreased the absorption of the drug and decreased its blood pressure-lowering effect. Based on this report, people taking nadolol should not consume green tea.
  • Calcium

    Calcium supplements, if taken at the same time as some beta-blocker drugs, may reduce blood levels of the drug. However, whether calcium affects nadolol in this manner is unknown. Until more information is available, people on nadolol should take calcium supplements an hour before or two hours after the drug.

    The interaction is supported by preliminary, weak, fragmentary, and/or contradictory scientific evidence.
  • White Willow

    The active compound in willow (Salix alba), salicin, is converted to salicylic acid in the body. Taking salicylates with other beta-adrenergic blocking drugs has resulted in decreased absorption of the drugs. Therefore, until more is known about the interaction between willow and nadolol, they should not be taken at the same time.

    The interaction is supported by preliminary, weak, fragmentary, and/or contradictory scientific evidence.

Potential Negative Interaction

  • Pleurisy Root

    As pleurisy root and other plants in the Aesclepius genus contain cardiac glycosides, it is best to avoid use of pleurisy root with heart medications such as beta-blockers.

    The interaction is supported by preliminary, weak, fragmentary, and/or contradictory scientific evidence.
  • Potassium

    People taking nadolol may experience significant increases in blood levels of potassium, though it is unknown whether supplementation with potassium might enhance this effect. People taking beta-blockers should therefore avoid taking potassium supplements, or eating large quantities of high-potassium foods, such as fruit (e.g., bananas), unless directed to do so by their doctor.

    The interaction is supported by preliminary, weak, fragmentary, and/or contradictory scientific evidence.

Explanation Required 

  • none

The Drug-Nutrient Interactions table may not include every possible interaction. Taking medicines with meals, on an empty stomach, or with alcohol may influence their effects. For details, refer to the manufacturers’ package information as these are not covered in this table. If you take medications, always discuss the potential risks and benefits of adding a new supplement with your doctor or pharmacist.

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